Decode Status Register into Human-Readable Flags

Code

#include <stdio.h>
#include <stdint.h>

bool is_bit_set(uint8_t reg, int bit){
    return (reg) & (1U << (bit));
}

void decode_status(uint8_t status_reg) {
    
    for (int i = 0; i < 8; i++){
        switch(i){
            case 0:
                if(is_bit_set(status_reg, i)){
                    printf("Power On\n");
                }
                break;
            case 1:
                if(is_bit_set(status_reg, i)){
                    printf("Error\n");
                }
                break;
            case 2:
                if(is_bit_set(status_reg, i)){
                    printf("Tx Ready\n");
                }
                break;
            case 3:
                if(is_bit_set(status_reg, i)){
                    printf("Rx Ready\n");
                }
                break;
            case 4:
                if(is_bit_set(status_reg, i)){
                    printf("Overheat\n");
                }
                break;
            case 5:
                if(is_bit_set(status_reg, i)){
                    printf("Undervoltage\n");
                }
                break;
            case 6:
                if(is_bit_set(status_reg, i)){
                    printf("Timeout\n");
                }
                break;
            case 7:
                if(is_bit_set(status_reg, i)){
                    printf("Reserved\n");
                }
                break;
            default:
                break;
        }


    }
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    decode_status(reg);
    return 0;
}

Solving Approach

 

 

 

Upvote
Downvote
Loading...

Input

13

Expected Output

Power On Tx Ready Rx Ready